This is a source-attributed discovery row. It can help you find a place and its citations; it is not a DataCenterData finding that the facility is distinct or currently operating.
Reported geography
Source-reported location for Stargate Lighthouse Campus.
Exact source coordinates (provider label); this is not a parcel claim. Nearby source points are combined into one accessible target that opens this exact map scope. View these exact rows on the interactive map →
Source row snapshot
- Operator as published
- Vantage Data Centers
- Address and locality
- Between I-43, Dixie Road, and the Ozaukee Interurban Trail, north of the city of Port Washington · Port Washington · Ozaukee County · Wisconsin · 53074
- Official metro area
- Milwaukee-Waukesha, WI
- Source-reported status
- under construction
- Provider facility type
- data center
- Reported capacity
- Planned: 902 MW (source-reported; boundary not independently verified; MW measure not stated by provider)
- Source freshness
- 13 September 2026
- Location precision
- exact (provider label)
- Compute Atlas confidence label
- reported (provider's classification; not a DataCenterData check)
- Stable directory ID
dcd-dir-001365
Reported details
Source-reported by Compute Atlas; not independently verified by DataCenterData. Provider wording is kept; long provider notes are shortened and marked …; unknown is not zero; none of these values is totaled, ranked or compared.
- Electric utility
- We Energies (WEC Energy Group)
- Power source
- Mixed
- Cooling
- Closed-loop
- Land area
- 672 acres (source-reported; parcel boundary not established)
- Announced investment
- $15 billion
- Announced jobs
- 1,000 permanent · 4,000 construction
- Community response
- Provider label: contested
- AI-use label (provider)
- confirmed
- Announced
- 2025
Incentives reported by the source
Whether each incentive was approved, awarded or received is not established.
- Tax Incremental District No. 5 (TID 5; ~$458.6M projected expenditure, mostly developer-reimbursement) · Port Washington, Wisconsin · 2025 · $458 million (as stated) Open cited source →
Provider notes
Energy. Vantage commits to '100% Matched Zero-Emission Energy' via solar, wind, and battery storage; the four buildings need ~1.3 GW, served under a dedicated We Energies rate with Vantage underwriting the power infrastructure. A $1.4B transmission line was proposed by American Transmission Co.
Water. Closed-loop liquid cooling using minimal water; Vantage commits to 'water positivity,' restoring more water than the campus consumes.
Community. An April 2026 referendum passed (~66%) requiring voter approval for future TIDs over $10M; Marquette polling found ~70% believe data-center costs outweigh benefits (the biggest sentiment shift in 14 years of polling); Great Lakes Neighbors United sued over the TID's legality. The existing TID 5 stands.
Any MW value is reproduced as source-reported context. Its measurement boundary is not established consistently enough for comparison. Unknown is not zero.
Status history supplied by the source
- 2025 · source-reported proposed
Announced as Stargate Wisconsin site; $15B, 4-building campus on 674 acres north of Milwaukee
- 2025-12 · source-reported under construction
Ground broken; foundation work visible in satellite imagery; Phase 1 ($8B) targeted 2028
Sources and attribution
These sources are listed for the whole row. Unless a figure links to its own source, the provider does not mark which one gave it, so a figure may not appear in every source.
- OpenAI, Oracle, and Vantage Data Centers Announce Stargate Site in Wisconsin — Vantage · Vantage Data Centers
- Vantage Breaks Ground on $15B Stargate Campus in Wisconsin — Data Center Knowledge · Data Center Knowledge
- $15B Stargate data center breaks ground in Wisconsin · Construction Dive
- Did Port Washington voters stop a $458 million data center project? · Wisconsin Watch
- Port Washington voters pass referendum fueled by concerns about data center project · Wisconsin Public Radio
- Groundbreaking held as construction begins on $15 billion Port Washington data center · BizTimes Milwaukee
- Large data center may be coming to Port Washington · Wisconsin Public Radio
- Tech giant sues Wisconsin regulator over data center restrictions · The Daily Reporter
- Groups sue Wisconsin DNR over environmental review of Port Washington data centers · Wisconsin Public Radio
- DOR Qualified Data Center Exemption — Oracle America Cloud Services LLC (formerly Green Chile Ventures, LLC), Port Washington, WI: "Four data center buildings at 531, 533, 701, and 723 E. Lake Drive", certified 10/31/2025 · Wisconsin Department of Revenue
- OpenStreetMap/Nominatim geocode of Lake Drive, Town of Port Washington, Ozaukee County, WI 53074 (postal code provenance) · OpenStreetMap contributors
Adapted from Compute Atlas by Edward Kubiak, edition 1.34.1, under CC BY 4.0. Upstream ID stargate-port-washington-wi. Filtered to data-center records in the 50 U.S. states; selected fields normalized for search and display; DataCenterData directory IDs added. Some locations in this layer are reported by the provider as derived from OpenStreetMap (© OpenStreetMap contributors, ODbL, https://www.openstreetmap.org/copyright) and Epoch AI (CC BY 4.0).
Compute Atlas 1.34.1 with retained prior rows and publication holds. This is a DataCenterData composite, not an unmodified publisher edition. This row uses the captured source from 1.34.1, source as of 2026-10-14T20:40:52.293Z.
Operator’s own listing
What the operator publishes about this site on its own website, matched to this licensed row by DataCenterData. Facts are taken from the operator’s page, shown with a link to it, and not independently verified; no page text is republished and the licensed values above are unchanged. A match does not establish that the listing and this row cover exactly the same building, suite or boundary, or who owns the site.
- Name as listed
- Lighthouse
- Address as published
- Port Washington, WI
Lifecycle status is not published for this listing.
Critical IT: 902 MW.
Site area: 672 acres.
Expected: 2028.
Update this profile with a public source. The request includes topics needing more information; this does not mean the facility lacks them. Corrections and additions are reviewed before publication.
That does not mean the row is wrong, and it does not mean no reviewed record exists for the same place. A link is added only when an identifier or source establishes the match.
Recorded information
What this page records, grouped by topic, with the source's units and qualifications. Company-reported values stay labeled as company-reported. Related listings are shown separately.
Licensed directory listing dcd-dir-001365
Licensed directory row.
Provider notes and the source narrative are printed on this page and are not repeated here.
Identity and relationships
- Provider facility type: data center
Provider facility type.
- AI-use label (provider): confirmed
Compute Atlas classification, not a DataCenterData finding.
Location and precision
- Between I-43, Dixie Road, and the Ozaukee Interurban Trail, north of the city of Port Washington, Port Washington, WI 53074 (Exact location)
Roles
- Operator: Vantage Data Centers
Operator label as published by the provider; no parent company is inferred.
Lifecycle
- Source-stated status: source-reported under construction
Provider status label; not a DataCenterData finding that the facility is operating.
- Announced: 2025
Provider-reported announcement date.
- Status history: 2025 · source-reported proposed
Status history supplied by the source.
- Status history: 2025-12 · source-reported under construction
Status history supplied by the source.
Area, acreage and buildings
- Land area: 672 acres (source-reported; parcel boundary not established)
Power capacity
- Reported capacity: Planned: 902 MW (source-reported; boundary not independently verified; MW measure not stated by provider)
Reproduced as the page prints it; not ranked or totaled; unknown is not zero.
- Electric utility: We Energies (WEC Energy Group)
Utility as named by the provider.
- Power source: Mixed
Provider label.
Cooling, water, PUE and WUE
- Cooling: Closed-loop
Provider label.
Permits, incentives, jobs and proceedings
- Announced investment: $15 billion
Announced figure; whether it covers one building, a campus or a multi-phase program is not established.
- Announced jobs: 1,000 permanent · 4,000 construction
Announced figures; whether they cover one building, a campus or a multi-phase program is not established.
- Community response: Provider label: contested
Compute Atlas characterization, not a DataCenterData assessment.
- Incentive reported by the source: Tax Incremental District No. 5 (TID 5; ~$458.6M projected expenditure, mostly developer-reimbursement) · Port Washington, Wisconsin · 2025 · $458 million (as stated)
Whether the incentive was approved, awarded or received is not established.
Sources, dates, limitations and corrections
- Provider update date: 2026-09-13
Provider update date is not a DataCenterData verification date.
Not yet recorded here: Connectivity · Services · Certifications and design ratings · Rack density · Availability · Specification links and contact.
Licensed values: adapted from Compute Atlas by Edward Kubiak under CC BY 4.0. Source-reported and not independently verified.
Update this profile with a public source. The request includes topics needing more information; this does not mean the facility lacks them. Corrections and additions are reviewed before publication.